/*
 * Copyright (C) 2006-2010 Alfresco Software Limited.
 *
 * This file is part of Alfresco
 *
 * Alfresco is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Lesser General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * Alfresco is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public License
 * along with Alfresco. If not, see <http://www.gnu.org/licenses/>.
 */

package org.alfresco.jlan.server.auth.acl;

import org.alfresco.jlan.server.SrvSession;
import org.alfresco.jlan.server.auth.ClientInfo;
import org.alfresco.jlan.server.core.SharedDevice;

/**
 * User Id Access Control Class
 *
 * <p>Allow/disallow access to a shared device by checking the Unix user id of the client.
 *
 * @author gkspencer
 */
public class UidAccessControl extends AccessControl {

  //	User id to check for

  private int m_uid;

	/**
	 * Class constructor
	 *
	 * @param uidStr String
	 * @param uid int
	 * @param type String
	 * @param access int
	 */
	public UidAccessControl(String uidStr, int uid, String type, int access) {
		super(uidStr, type, access);

		//	Set the required user id

		m_uid = uid;
	}


  /**
	 * Check if the session is an RPC session (NFS/mount) and the client has the required Unix user id.
	 *
	 * @param sess SrvSession
	 * @param share SharedDevice
	 * @param mgr AccessControlManager
	 * @return int
   */
  public int allowsAccess(SrvSession sess, SharedDevice share, AccessControlManager mgr) {

		//	Check if the session has client information

		if ( sess.hasClientInformation() == false)
			return Default;

		//	Check if the client main group id is set and matches the required group id

		ClientInfo cInfo = sess.getClientInformation();

		if ( cInfo.getUid() != -1 && cInfo.getUid() == m_uid)
			return getAccess();
		return Default;
  }
}
